Antibacterial composite technical cloth fabric, intelligent production line and process thereof

Abstract

The invention relates to an antibacterial composite technical cloth fabric, an intelligent production line and a process thereof in the field of antibacterial fabrics. The antibacterial composite technical cloth fabric production line comprises a blending device, an atomization spraying device, a constant-temperature fixing device, a lamination compounding device, a hot-pressing compounding device and a cooling device which are arranged in sequence; the cooling device comprises a front cooling roller set and a rear cooling roller set, the constant-temperature fixing device comprises a drying oven, a heat recovery equipment set is connected between the constant-temperature fixing device and the hot-pressing composite device, and the heat recovery equipment set comprises multiple stages of waste heat recoverers which are arranged from high to low according to the temperature range of admitted gas; the waste heat recoverer comprises a waste gas recovery pipe and a heat exchanger. The waste gas recovery pipe is used for guiding waste gas exhausted by the constant-temperature fixing device or the hot-pressing composite device into the heat exchanger. The high efficiency and environmental protection property of antibacterial fabric production and the high-quality performance of the fabric are realized; and through the waste heat recovery design and the matching process design in the production line, the production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to a technological fabric, an intelligent production line and a process thereof, and in particular to an antibacterial composite technological fabric, an intelligent production line and a process thereof applied in the field of antibacterial fabrics. Background Art

[0002] Existing antimicrobial composite technical fabrics incorporate the latest advances in textiles and materials science. By embedding or coating fibers with antimicrobial nanoparticles or compounds, such as silver ions, zinc oxide, or specific antimicrobial agents, these fabrics possess long-lasting antimicrobial properties. These nanoscale antimicrobial agents effectively inhibit or kill bacteria, fungi, and some viruses that come into contact with the fabric surface, thereby reducing the risk of cross-infection. Furthermore, technical fabrics typically utilize a multi-layer composite structure, combining multiple functionalities such as breathability, waterproofing, and wear resistance to adapt to diverse environments and usage requirements. Precision textile processes and finishing techniques ensure that the antimicrobial ingredients are evenly distributed and stably integrated into the fabric, ensuring the long-lasting antimicrobial effect while minimizing potential impacts on the human body and the environment.

[0003] The specification of Chinese invention patent CN115094617B discloses a production device and process for hot stamping sofa fabrics. Compared with traditional fabric cutting equipment, this invention can push the leather fabric toward the sliding block for a distance when the sliding block moves toward the support plate, thereby avoiding the problem that after the cutting device cuts the fabric, the smoothing structure set therein can smooth the fabric when the sliding block approaches the support plate, which can avoid the problem of fabric cross-section rebound and wrinkles due to the toughness of the leather fabric after the cutting device cuts the fabric.

[0004] Chinese invention patent CN112843755B discloses an antibacterial fabric for sofa cushions and its production process. The antibacterial coating comprises the following materials by weight: 45-50 parts deionized water, 3-5 parts chitosan, and 6-8 parts modified antibacterial particles; the modified antibacterial particles are 200-300 mesh titanium dioxide particles. The application uses titanium dioxide particles as the main component of the antibacterial agent. On the one hand, the active centers of titanium dioxide particles can absorb energy from the environment, inhibiting or killing bacteria, thereby producing antibacterial properties. On the other hand, titanium dioxide acts as a sunscreen, effectively absorbing ultraviolet light and reducing the aging reaction of ultraviolet light on the material surface, thereby effectively improving the antibacterial and long-lasting properties of the fabric.

[0005] The existing antibacterial fabric production process has high energy consumption, and a large amount of waste heat is emitted during the drying and hot pressing processes. The existing antibacterial fabric production process and equipment have low thermal energy utilization rates, and the waste heat generated during production is difficult to effectively recover, resulting in energy waste. Summary of the Invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the existing antibacterial fabric production process and equipment have low thermal energy utilization rate, and the waste heat generated during production is not easy to be effectively recovered, resulting in energy waste.

[0007] To solve the above problems, the present invention provides an intelligent production line for antibacterial composite technology fabrics, comprising a blending device, an atomizing spraying device, a constant temperature fixing device, a laminating device, a hot pressing device and a cooling device arranged in sequence, the cooling device comprising a front cooling roller group and a rear cooling roller group, the constant temperature fixing device comprising an oven, a heat recovery device group being connected between the constant temperature fixing device and the hot pressing device, the heat recovery device group comprising a multi-stage waste heat recovery device arranged from high to low according to the temperature range of the access gas;

[0008] The waste heat recovery device includes an exhaust gas recovery pipe and a heat exchanger. The exhaust gas recovery pipe is used to guide the exhaust gas discharged from the constant temperature fixing device or the hot pressing composite device into the heat exchanger. A main heat exchange pipe is provided in the heat exchanger for passing the heat exchange fluid and exchanging heat with the exhaust gas. A plurality of reflux heat exchange pipes are provided on the outside of the main heat exchange pipe for reflux output of the heat exchange fluid.

[0009] The output end of the reflux heat exchange pipe of the previous stage waste heat recovery device is connected to the input end of the main heat exchange pipe of the next stage waste heat recovery device;

[0010] The tail end of the main shell is connected to a heat storage tank for storing heat exchange liquid after heat exchange. The heat storage tank includes a transfer tank connected to the main heat exchange pipe. The output end of the transfer tank is connected to a backup tank through a three-way regulating valve. The side output end of the three-way regulating valve is connected to a central part.

[0011] A heat stabilization tank is provided between every two adjacent waste heat recovery devices, and the heat stabilization tank is connected to the output ends of at least two backup tanks; the front cooling roller group and the rear cooling roller group are respectively connected to at least one heat stabilization tank.

[0012] In the above-mentioned intelligent production line of antibacterial composite technology fabrics, the heat during hot pressing is recovered and efficiently utilized, thereby improving energy utilization.

[0013] As a further improvement of the present application, the heat exchanger includes a main shell body connected to the exhaust gas recovery pipe, and a plurality of airway plates are installed in the main shell body, the main heat exchange pipe is arranged between the plurality of airway plates, and a plurality of return heat exchange pipes are arranged around the outside of the main heat exchange pipe and pass through the plurality of airway plates. Concentrating parts are provided at both the front and rear ends of the heat exchanger, and a plurality of return heat exchange pipes are connected to a pair of concentrating parts. The main heat exchange pipe is connected to a liquid inlet pipe passing through a concentrating part, and a reflux output pipe for discharging the reflux heat exchange pipe is installed on the concentrating part; a T-shaped heat exchange fin is connected between two adjacent return heat exchange pipes and the main heat exchange pipe.

[0014] As a further improvement of the present application, a heat exchange air pipe is provided inside the heat stabilizing tank, which is connected to an oven or a hot pressing composite device. A preheating nozzle is installed at the input end of the hot pressing composite device, and a temperature regulator is installed at the output end of the heat stabilizing tank.

[0015] As a further improvement of the present application, multiple heat stabilization tanks are connected to the cooling device, and the temperature range of the front cooling roller group when working includes: 50-70 degrees Celsius, and the temperature range of the rear cooling roller group when working includes: 20-25 degrees Celsius.

[0016] As another improvement of the present application, the constant temperature fixing device performs heating, insulation and cooling stages in sequence when working, and each stage is assisted by the supply of air flow through a different heat stabilization tank, and each heat stabilization tank is set with a different rated temperature range according to the waste heat recovery device connected.

[0017] As another improved supplement to the present application, the hot pressing composite device includes a hot pressing roller, which is heated by steam. The exhaust ends of the hot pressing roller and the constant temperature fixing device are both equipped with electromagnetic three-way valves, and one output end of the electromagnetic three-way valve is connected to the exhaust gas treatment system.

[0018] As another improvement of the present application, a temperature sensor is installed at the input end of the exhaust gas recovery pipe. After the temperature sensor detects the exhaust gas temperature, it adjusts the flow rate of the heat exchange liquid in the heat exchanger according to the exhaust gas temperature. When the exhaust gas temperature drops to within the set value range, the heat exchange liquid input is stopped.

[0019] As another improvement of the present application, the heat stabilization tank is connected to the backup tanks of two adjacent waste heat recovery devices; when the liquid storage volume in the heat stabilization tank is lower than the minimum set value B, the use of the heat stabilization tank is suspended, and the heat exchange liquid in the backup tank on the high-priority waste heat recovery device is introduced first. If the liquid storage volume is still lower than the set value A after the heat exchange liquid is introduced, the heat exchange liquid in the backup tank on the other connected waste heat recovery device is introduced; if the liquid storage volume is still lower than the set value A after the heat exchange liquid is introduced, the heat stabilization tank is deactivated and waits for the backup tank on the high-priority waste heat recovery device to store liquid; if the liquid storage volume is greater than or equal to the set value A after the heat exchange liquid is introduced, the heat stabilization tank is continued to be activated.

[0020] A production process for antibacterial composite technical fabrics, specifically comprising the following steps:

[0021] S1, pre-treatment, cleaning of spun fibers, and then weaving through a blending device to form the surface fabric;

[0022] S2, antibacterial surface manufacturing: spraying the surface fabric with nanosilver solution through an atomizing spray device; then placing the surface fabric into a constant temperature fixture to solidify the coating;

[0023] S3, composite structure forming: the antibacterial layer, the middle layer fabric and the base fabric are laminated in sequence through a lamination device; and then input into a hot pressing device for hot pressing and lamination;

[0024] The exhaust gas discharged from the hot pressing compound is input into the heat exchanger in the waste heat recovery device. The heat exchange liquid in the heat stabilization tank stores heat after heat exchange. The external airflow after heat exchange with part of the heat stabilization tank is transported to the oven of the constant temperature fixed device through the hot air circulation system. The heat exchange liquid in part of the heat stabilization tank is used for cooling the device.

[0025] S4, cooling treatment, rapid cooling through water-cooling rollers, when cooling, pre-cooling through the front water-cooling roller group of the water-cooling rollers, and then complete cooling through the rear water-cooling roller group.

[0026] Disclosed is an antibacterial composite technical fabric, manufactured based on the production process of antibacterial composite technical fabric. The base fabric is a honeycomb mesh breathable fabric, the surface fabric includes a blended fiber fabric, and the blended fiber fabric is woven from polyester fiber and nylon 6 fiber in a ratio of 7:3. The middle layer fabric includes a TPU membrane material; the TPU membrane layer is embedded with essential oil microcapsules, and when preparing the TPU membrane material, the essential oil microcapsules and TPU particles are pre-mixed at a ratio of 5-15wt%.

[0027] In summary, this solution achieves the high efficiency and environmental protection of antibacterial fabric production and the high-quality performance of the fabric; through the waste heat recovery design and supporting process design in the production line, it not only improves production efficiency and reduces production costs, but also realizes the efficient recovery and reuse of heat energy in the fabric production process, reduces energy waste, and the produced fabric has good antibacterial and breathable properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a topological diagram of the intelligent production line according to the first embodiment of the present application;

[0029] Figure 2 This is a connection diagram of the intelligent production line according to the first embodiment of the present application;

[0030] Figure 3 This is a three-dimensional diagram of the waste heat recovery device according to the first embodiment of the present application;

[0031] Figure 4 This is a cross-sectional view of the waste heat recovery device according to the first embodiment of the present application;

[0032] Figure 5 This is a cross-sectional view of the waste heat recovery device according to the first embodiment of the present application;

[0033] Figure 6 This is a working diagram of the heat recovery equipment group of the first and second embodiments of this application;

[0034] Figure 7 This is a schematic diagram of the logic flow of the heat recovery equipment group when operating in the first and second embodiments of the present application;

[0035] Figure 8 This is a production process flow chart of the third embodiment of this application;

[0036] Figure 9 This is a schematic diagram of the structure of the antibacterial composite technical fabric according to the fourth embodiment of this application.

[0037] Description of the numbers in the figure:

[0038] 1. Constant temperature fixing device; 2. Hot pressing composite device; 3. Waste heat recovery device; 31. Waste gas recovery pipe; 32. Heat exchanger; 321. Main shell; 322. Reflux heat exchange pipe; 323. Main heat exchange pipe; 324. Concentrator; 4. Heat storage tank; 41. Transfer tank; 42. Backup tank; 43. Three-way regulating valve; 5. Cooling device; 6. Thermal stabilization tank. DETAILED DESCRIPTION

[0039] The following describes in detail four implementation methods of the present application with reference to the accompanying drawings.

[0040] The first implementation method:

[0041] Figure 1 - Figure 7 FIG. 1 shows an intelligent production line for antibacterial composite technical fabrics, comprising a blending device, an atomizing spraying device, a constant temperature fixing device 1, a laminating device, a hot pressing device 2, and a cooling device 5, which are arranged in sequence;

[0042] The blending device is used to use the spun yarn and weave it to obtain the surface fabric of the antibacterial composite technical fabric; a person skilled in the art can select a suitable blending device in the prior art to set it, such as a twin-screw composite spinning machine;

[0043] The atomizing spraying device is used to spray the nano-silver solution onto the blended surface fabric outputted by the blending device. A person skilled in the art may select a suitable atomizing spraying device in the prior art to set up the device; for example, an electrostatic spraying system composed of a high-voltage generator and a porous atomizing nozzle; or an aerosol spray coating device composed of an ultrasonic atomizer and an airflow guide device;

[0044] The constant temperature fixing device 1 is used to heat the sprayed nano-silver solution so that it is solidified into a nano-silver coating on the blended fabric; the constant temperature fixing device 1 in this solution is a hot air circulation oven, and those skilled in the art can select a suitable hot air circulation oven in the prior art to set it;

[0045] The laminating and compounding device is used to laminate the surface fabric, the middle fabric and the base fabric of the antibacterial composite technical cloth together, and then input them into the hot pressing and compounding device 2 for hot pressing and compounding. The laminating and compounding device in this scheme adopts the equipment of the prior art, and is set by those skilled in the art using the laminating and compounding device suitable for fabrics in the prior art;

[0046] A heat recovery device group is connected between the constant temperature fixing device 1 and the hot pressing composite device 2. The heat recovery device group includes a multi-stage waste heat recovery device 3 arranged from high to low according to the temperature range of the incoming gas;

[0047] The waste heat recovery device 3 includes an exhaust gas recovery pipe 31 and a heat exchanger 32. The exhaust gas recovery pipe 31 is used to guide the exhaust gas discharged from the constant temperature fixing device 1 or the hot pressing composite device 2 into the heat exchanger 32. A main heat exchange pipe 323 is provided in the heat exchanger 32 for passing a heat exchange fluid and exchanging heat with the exhaust gas. A plurality of return heat exchange pipes 322 are provided on the outside of the main heat exchange pipe 323 for returning the heat exchange fluid.

[0048] The heat exchanger 32 includes a main shell 321 that communicates with the exhaust gas recovery pipe 31, and a plurality of airway plates are installed in the main shell 321. The main heat exchange pipe 323 is arranged between the plurality of airway plates. The plurality of return heat exchange pipes 322 are arranged around the outside of the main heat exchange pipe 323 and pass through the plurality of airway plates. The front and rear ends of the heat exchanger 32 are provided with a centralizing portion 324. The plurality of return heat exchange pipes 322 communicate with a pair of centralizing portions 324. The main heat exchange pipe 323 is connected to a liquid inlet pipe that passes through one of the centralizing portions 324, and the centralizing portion 324 is installed with a return output pipe for discharging liquid from the return heat exchange pipe 322; a T-shaped heat exchange fin plate is connected between two adjacent return heat exchange pipes 322 and the main heat exchange pipe 323;

[0049] When any waste heat recovery device 3 outputs the waste gas after heat exchange, if the waste gas temperature meets the waste gas admission temperature requirement of other waste heat recovery devices 3, the waste gas after heat exchange discharged by the waste heat recovery device 3 can be input into the corresponding lower-level waste heat recovery device 3;

[0050] The output end of the reflux heat exchange pipe 322 of the waste heat recovery device 3 of the previous stage is connected to the input end of the main heat exchange pipe 323 of the waste heat recovery device 3 of the next stage;

[0051] The tail end of the main housing 321 is connected to a heat storage tank 4 for storing heat exchange liquid after heat exchange. A liquid level sensor and a temperature sensor are installed in the heat storage tank 4. The heat storage tank 4 includes a transfer tank 41 that communicates with the main heat exchange pipe 323. The output end of the transfer tank 41 is connected to the backup tank 42 via a three-way regulating valve 43. The side output end of the three-way regulating valve 43 is connected to a centralizing portion 324.

[0052] The heat exchange fluid flows into the transfer tank 41 through the main heat exchange pipe 323 and accumulates in the transfer tank 41. When the amount of fluid stored in the transfer tank 41 reaches a set value, the heat exchange fluid temperature is detected. If the heat exchange fluid temperature is greater than the set value, the heat exchange fluid in the transfer tank 41 is transferred to the backup tank 42 for storage.

[0053] When the temperature of the heat exchange liquid is lower than the set value, the heat exchange liquid in the transfer tank 41 is transferred to the reflux heat exchange pipe 322 and finally transferred to the main heat exchange pipe 323 of the next-stage waste heat recovery device 3; and when the heat exchange liquid in the reflux heat exchange pipe 322 is refluxed and output, it is further heat-exchanged with the remaining exhaust gas in the waste heat recovery device 3 to further absorb the residual heat of the exhaust gas. The heat exchange liquid output from the reflux heat exchange pipe 322 to the next-stage waste heat recovery device 3 has a certain temperature, which is easy to meet the set temperature requirement of the transfer tank 41 on the first-stage waste heat recovery device 3;

[0054] A heat stabilization tank 6 is provided between each two adjacent waste heat recovery devices 3, and the heat stabilization tank 6 is connected to the output ends of at least two backup tanks 42; the front cooling roller group and the rear cooling roller group are respectively connected to at least one heat stabilization tank 6;

[0055] The cooling device 5 includes a front cooling roller group and a rear cooling roller group. The input ends of the front cooling roller group and the rear cooling roller group are respectively connected to different designated heat stabilization tanks 6; the temperature range of the front cooling roller group when working includes: 50-70 degrees Celsius, and the temperature range of the rear cooling roller group when working includes: 20-25 degrees Celsius.

[0056] A heat exchange air pipe is provided in the heat stabilizing tank 6. The heat exchange air pipe adopts a heat exchange pipe bank of the prior art and is connected to the oven or the hot pressing compound device 2. A preheating nozzle is installed at the input end of the hot pressing compound device 2. The preheating nozzle adopts the prior art and a person skilled in the art selects a suitable air flow nozzle in the prior art and installs it at the input end of the hot pressing compound device 2.

[0057] A person skilled in the art can designate a suitable heat stabilizing tank 6 as the gas source for the preheating nozzle on the oven or the hot pressing composite device 2 according to the temperature range of the heat exchange liquid stored in the heat stabilizing tank 6;

[0058] The oven and the hot pressing composite device 2 are respectively assisted by the air supply of different designated heat stabilizing tanks 6; when the heat stabilizing tank 6 supplies air to the oven, the air flow it outputs corresponds to the heating, heat preservation or cooling stage when the oven is working, according to the temperature range of the air flow it can output;

[0059] When the heat stabilizing tank 6 assists in supplying air to the heat stabilizing tank 6 , air is supplied to the preheating nozzle at the input end of the hot pressing composite device 2 , so that the fabric supplied to the hot pressing composite device 2 is preheated by the hot air flow;

[0060] The output end of the heat stabilization tank 6 is equipped with a temperature regulator, which is used to adjust the temperature of the fluid output from the heat stabilization tank 6. The heat exchange liquid output from the heat stabilization tank 6 and the air flow output from the heat exchange pipe can be adjusted to a specified temperature by the temperature regulator before output;

[0061] The temperature regulator adopts the equipment used for fluid heating or cooling in the prior art. The temperature regulator includes an electric heating device and a semiconductor refrigerator. The person skilled in the art selects a suitable temperature regulator for setting.

[0062] Multiple heat stabilization tanks 6 are connected to the cooling device 5. Any heat stabilization tank 6 can be used as a liquid supply source for the front cooling roller group or the rear cooling roller group to achieve waste heat reuse. When the heat exchange liquid in the heat stabilization tank 6 is reused, the temperature of the heat exchange liquid in the heat stabilization tank 6 is monitored in real time to see if it is within the required liquid temperature range set by the front cooling roller group or the rear cooling roller group.

[0063] If so, the heat stabilizing tank 6 is set as the liquid supply source of the front cooling roller group or the rear cooling roller group, and when the front cooling roller group or the rear cooling roller group replaces the internal liquid, the liquid is supplied to it through the heat stabilizing tank 6;

[0064] If not, the heat exchange air pipe on the heat stabilizing tank 6 is opened, so that the heat stabilizing tank 6 exchanges heat with the air flow input in the heat exchange air pipe, and the hot air flow after heat exchange is output to the corresponding equipment;

[0065] The heat stabilization tank 6 is connected to the backup tanks 42 of two adjacent waste heat recovery devices 3;

[0066] When the liquid level in the heat stabilization tank 6 is lower than the minimum set value B, the use of the heat stabilization tank 6 is suspended, and the heat exchange liquid in the backup tank 42 of the high-priority waste heat recovery device 3 is introduced first. If the liquid level is still lower than the set value A after the heat exchange liquid is introduced, the heat exchange liquid in the backup tank 42 of another connected waste heat recovery device 3 is introduced; if the liquid level is still lower than the set value A after the heat exchange liquid is introduced, the heat stabilization tank 6 is deactivated and wait for the backup tank 42 of the high-priority waste heat recovery device 3 to store liquid;

[0067] If the storage volume of the heat exchange liquid is greater than or equal to the set value A after the heat exchange liquid is introduced, the heat stabilization tank 6 is continued to be used;

[0068] The heat recovery equipment group of this embodiment realizes efficient heat recovery and reuse, which not only significantly improves the energy utilization efficiency of the production line, but also effectively reduces waste heat emissions and is environmentally friendly. Specifically, through the setting of a multi-stage waste heat recovery device, the heat energy in the exhaust gas generated by the constant temperature fixing device 1 and the hot pressing composite device 2 can be fully captured and converted. This heat energy is effectively transferred to the heat exchange liquid through the action of the waste heat recovery device 3 and stored in the heat stabilization tank 6. The heat stabilization tank 6 not only serves as a storage and regulation device for the heat exchange liquid, but also realizes precise temperature control of the oven working stage and the supply of hot air flow to the preheating nozzle of the hot pressing composite device 2 through connection with the oven and the hot pressing composite device 2, effectively improving the overall heat energy utilization efficiency of the production line.

[0069] In summary, this embodiment realizes efficient heat energy recovery and reuse of the intelligent production line of antibacterial composite technology fabrics through the heat recovery equipment group.

[0070] Second implementation method:

[0071] Figure 7 It is shown that the hot pressing composite device 2 includes a hot pressing roller, which is heated by steam. The exhaust ends of the hot pressing roller and the constant temperature fixing device 1 are both equipped with electromagnetic three-way valves. One output end of the electromagnetic three-way valve is connected to the exhaust gas treatment system. When it is detected that the temperature of the exhaust gas discharged from the hot pressing roller or the constant temperature fixing device 1 is lower than the set value, the electromagnetic three-way valve is controlled to operate so that the exhaust gas is discharged into the exhaust gas treatment system.

[0072] A temperature sensor is installed at the input end of the exhaust gas recovery pipe 31. After the temperature sensor detects the exhaust gas temperature, it adjusts the flow rate of the heat exchange liquid in the heat exchanger 32 according to the exhaust gas temperature and the set temperature value of the corresponding transfer tank 41, so that the heat exchange liquid input to the transfer tank 41 is within the set temperature range. When the exhaust gas temperature drops to within the set value range, the heat exchange liquid input is stopped.

[0073] When the constant temperature fixing device 1 is in operation, it sequentially performs heating, heat preservation, and cooling stages. In each stage, a different heat stabilizing tank 6 is used to assist in supplying airflow. Each heat stabilizing tank 6 is provided with a different rated temperature range according to the waste heat recovery device 3 to which it is connected (the rated temperature range represents the stable temperature range of the heat exchange fluid stored in the heat stabilizing tank 6). According to the airflow temperature required in each stage, a suitable heat stabilizing tank 6 is selected as the auxiliary airflow supply source. At the same time, according to the temperature of the heat exchange fluid in the heat stabilizing tank 6, the external airflow velocity is adjusted so that the external airflow is heated to the auxiliary airflow temperature required for the specified stage after heat exchange through the heat stabilizing tank 6.

[0074] Different heat stabilization tanks 6 store heat exchange liquid after heat exchange with exhaust gases of different temperature gradients. After the airflow passes through different heat stabilization tanks 6 for heat exchange, airflow of different temperature gradients is output to be quickly used in different working stages of the constant temperature fixing device 1;

[0075] This embodiment realizes the effective utilization of waste gas and the precise control of temperature. In the heating stage, a heat exchange fluid with a higher temperature is used to preheat the airflow to ensure that the airflow can quickly reach the required temperature range; in the heat preservation stage, a heat exchange fluid with a moderate temperature is used to maintain the stable temperature of the airflow to avoid energy loss; in the cooling stage, a heat exchange fluid with a lower temperature is used to cool the airflow to ensure that the airflow can smoothly transition to the next process link, and different heat stabilization tanks 6 in the heat recovery equipment group exchange heat with the external airflow through the stored heat exchange fluid to assist in gas supply for different working stages, and the cooled heat exchange fluid in the heat stabilization tank 6 can also supply liquid to the cooling device 5.

[0076] In summary, this embodiment realizes the effective recovery and utilization of waste heat discharged from the production process and the precise regulation of the working stage of the constant temperature fixing device 1 through intelligent and refined control means, which is easy to further improve the production efficiency and environmental protection performance of the antibacterial composite technology fabric.

[0077] The third implementation method:

[0078] Figure 8 The production process of an antibacterial composite technical fabric is shown, which specifically includes the following steps:

[0079] S1, pretreatment, cleaning the spun fibers, and then weaving them into surface fabrics through a blending device; using an activator to clean the spinning to activate the surface fabric and enhance the adhesion of the coating;

[0080] S2, manufacturing the antibacterial surface layer; spraying the nanosilver solution onto the surface fabric through an atomizing spray device; then feeding the surface fabric into a constant temperature fixing device 1 to cure the coating; the curing temperature of the coating during curing in the oven ranges from 100°C to 140°C;

[0081] S3, composite structure forming; the antibacterial layer, the middle layer fabric and the base fabric are laminated in sequence through a lamination device; then the fabrics are input into a hot pressing device for hot pressing and lamination; while the fabrics are input into the hot pressing device, a hot air flow is ejected from a preheating nozzle to preheat the fabrics;

[0082] The hot pressing compound temperature includes: 140-160℃, the pressure in the low pressure stage includes: 0.5-0.8MPa, the pressure in the high pressure stage includes: 1.0-1.2MPa, and the hot pressing time is: 30-60s;

[0083] The exhaust gas discharged from the hot pressing compound is input into the heat exchanger 32 in the waste heat recovery device 3, and the heat stabilizing tank 6 stores heat through the heat exchange liquid after heat exchange. The external airflow after heat exchange with part of the heat stabilizing tank 6 is transported to the oven of the constant temperature fixing device 1 through the hot air circulation system, and the heat exchange liquid in part of the heat stabilizing tank 6 is used for the cooling device 5;

[0084] S4, cooling treatment, rapid cooling through water-cooling rollers, when cooling, pre-cooling through the front water-cooling roller group of the water-cooling rollers, and then complete cooling through the rear water-cooling roller group.

[0085] The production process of this embodiment achieves rapid and uniform cooling of the fabric after hot pressing and lamination, ensuring the quality and performance of the fabric;

[0086] The heat energy in the waste gas generated during the hot pressing and laminating process and the antibacterial surface layer manufacturing is recovered by the waste heat recovery device 3 and transferred to the heat exchange fluid. The heat exchange fluid after heat exchange is then transported to the heat stabilization tank 6. The heat stabilization tank 6 can directly output the heat exchange fluid and be used to supply the front water-cooled roller group and the rear water-cooled roller group;

[0087] The front water-cooling roller group performs pre-cooling, which can quickly remove most of the heat on the fabric surface, while the rear water-cooling roller group further ensures that the fabric is completely cooled to the required temperature, thereby avoiding deformation or damage of the fabric due to overheating.

[0088] The heat exchange liquid in the heat stabilization tank 6 can also be used to exchange heat with the external airflow. After the external airflow is heated by the heat stabilization tank 6, it is selected according to its temperature for the preheating nozzle at the input end of the hot pressing composite device 2 or the different working stages of the constant temperature fixing device 1; so that the fabric can obtain airflow assistance for recycling waste heat at different production stages, thereby further reducing the production cost of the antibacterial composite technology fabric.

[0089] In summary, the production process of this embodiment realizes the efficient utilization and precise control of thermal energy in the production process of antibacterial composite technology fabrics through waste heat recovery, heat exchange fluid circulation and intelligent temperature control means, which not only improves production efficiency but also reduces production costs.

[0090] The fourth implementation method:

[0091] Figure 9 It shows an antibacterial composite technology fabric, the base fabric is a honeycomb mesh breathable fabric, the surface fabric includes a blended fiber fabric, the blended fiber fabric is woven from polyester fiber and nylon 6 fiber in a ratio of 7:3, and the middle layer fabric includes TPU membrane material.

[0092] The TPU film layer is embedded with essential oil microcapsules. When preparing the TPU film material, the essential oil microcapsules are pre-mixed with TPU particles at a ratio of 5-15wt%. After pre-mixing, the TPU film layer is prepared by existing technology. Those skilled in the art can select appropriate technical means in the existing technology to prepare the TPU film layer, such as: melt extrusion-blown film method and melt extrusion-cast film method; the preparation process of the TPU film layer will not be described in detail in this scheme.

[0093] The antibacterial composite technical fabric of this embodiment enhances the breathability of the fabric through the honeycomb mesh breathable fabric design of the base fabric, and also improves the comfort and durability of the fabric;

[0094] The surface fabric is a blend of polyester and nylon 6 fibers, combining the advantages of both fibers. This gives the fabric both the wear resistance and wrinkle resistance of polyester and the elasticity and softness of nylon 6. The surface fabric of this solution is also coated with a nano-silver coating during the production process, further enhancing its antibacterial effect.

[0095] The TPU membrane material of the middle layer fabric not only has excellent waterproof and windproof properties, but also has an antibacterial effect by embedding essential oil microcapsules, which enables the fabric to slowly release fragrance during use.

[0096] The antibacterial composite technical fabric of this embodiment realizes the multifunctionality of the fabric through a unique design and preparation process, meeting the diverse demands of consumers for fabric comfort, durability, health and environmental protection;

[0097] In summary, this solution achieves the high efficiency and environmental protection of antibacterial fabric production and the high-quality performance of the fabric; through the waste heat recovery design and supporting process design in the production line, it not only improves production efficiency and reduces production costs, but also realizes the efficient recovery and reuse of heat energy in the fabric production process, reduces energy waste, and the produced fabric has good antibacterial and breathable properties.

[0098] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. An intelligent production line for antibacterial composite technical fabrics, comprising a blending device, an atomizing spraying device, a constant temperature fixing device (1), a laminating device, a hot pressing device (2) and a cooling device (5) arranged in sequence, wherein the cooling device (5) comprises a front cooling roller group and a rear cooling roller group, and the constant temperature fixing device (1) comprises an oven, characterized in that: A heat recovery device group is connected between the constant temperature fixing device (1) and the hot pressing composite device (2), and the heat recovery device group includes a multi-stage waste heat recovery device (3) arranged from high to low according to the temperature range of the incoming gas; The waste heat recovery device (3) comprises a waste gas recovery pipe (31) and a heat exchanger (32); the waste gas recovery pipe (31) is used to guide the waste gas discharged from the constant temperature fixing device (1) or the hot pressing composite device (2) into the heat exchanger (32); a main heat exchange pipe (323) is provided in the heat exchanger (32) for introducing a heat exchange fluid and exchanging heat with the waste gas; a plurality of reflux heat exchange pipes (322) for reflux output of the heat exchange fluid are provided on the outside of the main heat exchange pipe (323); The output end of the reflux heat exchange pipe (322) of the waste heat recovery device (3) of the previous stage is communicated with the input end of the main heat exchange pipe (323) of the waste heat recovery device (3) of the next stage; The tail end of the main shell (321) is connected to a heat storage tank (4) for storing heat exchange liquid after heat exchange, and the heat storage tank (4) includes a transfer tank (41) communicating with the main heat exchange pipe (323), and the output end of the transfer tank (41) is connected to a backup tank (42) via a three-way regulating valve (43), and the side output end of the three-way regulating valve (43) is communicated with a centralizing portion (324); A heat stabilization tank (6) is provided between each two adjacent waste heat recovery devices (3), and the heat stabilization tank (6) is connected to the output ends of at least two backup tanks (42); and the front cooling roller group and the rear cooling roller group are respectively connected to at least one heat stabilization tank (6).

2. The intelligent production line for antibacterial composite technical fabric according to claim 1, characterized in that: The heat exchanger (32) includes a main shell (321) communicating with the exhaust gas recovery pipe (31), and a plurality of airway plates are installed in the main shell (321). The main heat exchange pipe (323) is arranged between the plurality of airway plates, and a plurality of return heat exchange pipes (322) are arranged around the outside of the main heat exchange pipe (323) and pass through the plurality of airway plates. Concentrators (324) are provided at both the front and rear ends of the heat exchanger (32). The plurality of return heat exchange pipes (322) are communicated with a pair of concentrators (324). The main heat exchange pipe (323) is connected to a liquid inlet pipe passing through a concentrator (324), and a return output pipe for discharging liquid from the return heat exchange pipe (322) is installed on the concentrator (324); a T-shaped heat exchange fin plate is connected between two adjacent return heat exchange pipes (322) and the main heat exchange pipe (323).

3. The intelligent production line for antibacterial composite technical fabric according to claim 1, characterized in that: A heat exchange air pipe is provided inside the heat stabilizing tank (6), and the heat exchange air pipe is connected to an oven or a hot pressing composite device (2). A preheating nozzle is installed at the input end of the hot pressing composite device (2), and a temperature regulator is installed at the output end of the heat stabilizing tank (6).

4. The intelligent production line for antibacterial composite technical fabric according to claim 1, characterized in that: The plurality of heat stabilizing tanks (6) are all connected to the cooling device (5); the temperature range of the front cooling roller group when working includes: 50-70 degrees Celsius; the temperature range of the rear cooling roller group when working includes: 20-25 degrees Celsius.

5. The intelligent production line for antibacterial composite technical fabric according to claim 1, characterized in that: The constant temperature fixing device (1) performs heating, heat preservation and cooling stages in sequence when in operation, and each stage is assisted by a different heat stabilization tank (6) to supply airflow, and each heat stabilization tank (6) is provided with a different rated temperature range according to the waste heat recovery device (3) to which it is connected.

6. The intelligent production line for antibacterial composite technical fabric according to claim 1, characterized in that: The hot pressing composite device (2) comprises a hot pressing roller, which is heated by steam. The hot pressing roller and the exhaust end of the constant temperature fixing device (1) are both equipped with an electromagnetic three-way valve, and one output end of the electromagnetic three-way valve is connected to the exhaust gas treatment system.

7. The intelligent production line for antibacterial composite technical fabric according to claim 1, characterized in that: A temperature sensor is installed at the input end of the exhaust gas recovery pipe (31). After detecting the exhaust gas temperature, the temperature sensor adjusts the flow rate of the heat exchange liquid in the heat exchanger (32) according to the exhaust gas temperature. When the exhaust gas temperature drops to within the set value range, the heat exchange liquid input is stopped.

8. The intelligent production line for antibacterial composite technical fabric according to claim 1, characterized in that: The heat stabilizing tank (6) is connected to the backup tanks (42) of two adjacent waste heat recovery devices (3); when the liquid storage volume in the heat stabilizing tank (6) is lower than the minimum set value B, the use of the heat stabilizing tank (6) is suspended, and the heat exchange liquid in the backup tank (42) on the high-priority waste heat recovery device (3) is introduced first; if the liquid storage volume is still lower than the set value A after the heat exchange liquid is introduced, the heat exchange liquid in the backup tank (42) on another connected waste heat recovery device (3) is introduced; if the liquid storage volume is still lower than the set value A after the heat exchange liquid is introduced, the heat stabilizing tank (6) is stopped, and the backup tank (42) on the high-priority waste heat recovery device (3) is waited for to store liquid; if the liquid storage volume is greater than or equal to the set value A after the heat exchange liquid is introduced, the heat stabilizing tank (6) is continued to be activated.

9. A production process for antibacterial composite technical fabric, applicable to the intelligent production line for antibacterial composite technical fabric according to any one of claims 1 to 8, characterized in that: The specific steps include: S1, pre-treatment, cleaning of spun fibers, and then weaving through a blending device to form the surface fabric; S2, manufacturing the antibacterial surface layer; spraying the nanosilver solution onto the surface fabric through an atomizing spray device; then inputting the surface fabric into a constant temperature fixing device (1) to solidify the coating; S3, composite structure forming: the antibacterial layer, the middle layer fabric and the base fabric are laminated in sequence through a lamination device; and then input into a hot pressing device for hot pressing and lamination; The waste gas discharged from the hot pressing compound is input into the heat exchanger (32) in the waste heat recovery device (3), and the heat stabilizing tank (6) stores heat through the heat exchange liquid after the heat exchange, and the external air flow after the heat exchange with part of the heat stabilizing tank (6) is transported to the oven of the constant temperature fixing device (1) through the hot air circulation system, and the heat exchange liquid in part of the heat stabilizing tank (6) is used for the cooling device (5); S4, cooling treatment, rapid cooling through water-cooling rollers, when cooling, pre-cooling through the front water-cooling roller group of the water-cooling rollers, and then complete cooling through the rear water-cooling roller group. 10.An antibacterial composite technical fabric, characterized by: The antibacterial composite technical fabric is manufactured based on the production process of claim 9, wherein the base fabric is a honeycomb mesh breathable fabric, the surface fabric includes a blended fiber fabric, and the blended fiber fabric is woven from polyester fiber and nylon 6 fiber in a ratio of 7:

3. The middle layer fabric includes a TPU membrane material, and the TPU membrane layer is embedded with essential oil microcapsules. When preparing the TPU membrane material, the essential oil microcapsules and TPU particles are pre-mixed at a ratio of 5-15wt%.

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